The Saarland had election day today. 
These are the forecasts of 6 p.m. GMT+1: The "Schulz-effect" wasn't visiible. In contrary, the SPD even lost 1.1%, while the CDU gained 5.8% and got 41% of the votes. They would need 44.75% to gain the absolute majority in the state, but most likely they will coalise with the social democrats and leave behind a small coalition consisting out of leftists on the one side and ultra-conservatives on the other. Neither the pirates, nor the greens or the liberals made it into the parliament (for pirates and greens: again).

The Saarland is maybe small, but some institutions (want to) see in the results a signal for the federal election in September. If the results would be similar to the ones in the Saarland, Merkel would continue to govern Germany. Most likely the results won't be similar. The Greens and the Liberals have, on the federal level, a high chance of getting into the Bundestag again, so we have to wait, how the next elections in Schleswig-Holstein and Northrhine-Westphalia in May end, to get a better forecast for the Bundestag-election.
The only thing we can definitely know because of the Saarlandian votes: 
The SPD can't trust the "Schulz-effect" to do all the work. They need contents and a good campaign still to win the election in September.

EDIT: The voter participation lay at 71%, in 2012 it lay only at 61.6%